How to eliminate the gear clearance of the planetary reducer?
What is the gear clearance of a planetary reducer? What impact does the clearance have? Below, we will introduce the detection and elimination methods for the gear clearance of a planetary reducer.
Release time:
2022-03-11 15:50
www.gdmotor.cn
What is the gear clearance of a planetary gear reducer? In simple terms, the planetary gear reducer fixes the input end, allowing the output end to rotate clockwise and counterclockwise. When the output end bears a positive and negative 2% rated torque, the output end of the reducer experiences a slight angular displacement, which is the return clearance, also known as "backlash." The unit is "minutes," which is 1/60 of a degree. Gear clearance is also referred to as the precision of the planetary gear reducer. Below, we will introduce the detection and elimination methods for gear clearance in planetary gear reducers.

Planetary Gear ReducerGear clearance testing methods:
The gears are installed according to the usage conditions (the center distance in actual use), where one gear cannot be fixed in rotation.
1. Use a feeler gauge to measure the profile clearance from the end face (the other gear can be rotated). The largest reading that can just fit the feeler gauge is the side clearance.
2. Use a dial gauge to measure the tooth head near the middle section of the active gear profile, rotate the active gear, and the reading will be the end side clearance.
Methods for eliminating (adjusting) gear clearance in planetary gear reducers:
Generally, apply red lubricant (a mixture of red powder and engine oil) on the tooth surface of the driving bevel gear, then rotate the driving bevel gear a few times by hand, resulting in red spots appearing on the two working surfaces of the driven bevel gear teeth.
If the indentation on the working surface of the driven bevel gear is located in the middle of the tooth height and occupies more than 60% of the tooth surface width, it indicates correct meshing. By adjusting the total thickness of the gasket between the main reducer housing and the bevel gear housing (i.e., moving the position of the bevel gear), the correct meshing position can be achieved.
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